integration guide - trane

BAS-SVP022A-GB

BACnet and Modbus RTU

Communication Interfaces

for Trane™ Chillers with Tracer UC800 Control

Integration Guide

Original instructions

Only qualifi ed personnel should install and service the equipment. The installation, starting up, and servicing

of heating, ventilating, and air-conditioning equipment can be hazardous and requires specifi c knowledge and

training. Improperly installed, adjusted or altered equipment by an unqualifi ed person could result in death

or serious injury. When working on the equipment, observe all precautions in the literature and on the tags,

stickers, and labels that are attached to the equipment.

Table of Contents

BAS-SVP022A-GB2 © 2014 Trane

Overview ............................................................................................................5

Tracer UC800 Controller Rotary Switches .......................................................6

Equivalent Data Points Reference List for RTHD Evo and RTAF Chillers:

BACnet, Modbus RTU .......................................................................................7

BACnet Data Points and Confi guration Property Defi nitions ......................13

Modbus RTU Data Points and Confi guration Property Defi nitions ............. 18

Additional Resources ......................................................................................21

Glossary ............................................................................................................22

BAS-SVP022A-GB 3

BAS-SVP022A-GB4

Copyright

All rights reserved. This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part, without the written permission of Trane. Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any person of such revision or change.

Trademarks

Trane and its logo are trademarks of Trane. All trademarks referenced in this document are the trademarks of their respective owners.

Warnings, Cautions and Notices

Warning, cautions and notices are provided in appropriate places throughout this document:

Warning!

Indicate a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Caution!

Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

NOTICE!

Indicates a situation that could result in equipment or property - damage - only accidents.

BAS-SVP022A-GB 5

Interoperability provides the capability for building control systems or devices from multiple vendors to communicate with each other through open, standard protocols. Trane has adopted open, standard interoperable protocols to give customers the fl exibility to choose the best possible vendor for their building subsystems and easily incorporate Trane products into legacy systems in existing buildings. This guide will provide:

• A brief overview of two of these protocols supported by Trane — BACnet ™ and Modbus ™ Remote Terminal Unit (RTU)

• An equivalent listing of data points for both protocols for RTHD Evo and RTAF chillers

• BACnet / Modbus RTU addressing

• BACnet / Modbus RTU data points and confi guration property defi nitions

• Additional resources

• Glossary of terms

Note: Users of this guide should have basic knowledge of BACnet/Modbus protocols. For more detailed information about these protocols, visit these company’s web sites listed under “Additional Resources”.

BACnet Protocol

The Building Automation and Control Network (BACnet and ANSI/ASHRAE Standard 135-2004) protocol is a standard that allows building automation systems or components from different manufacturers to share information and control functions. BACnet provides building owners the capability to connect various types of building control systems or subsystems together for a variety of reasons. In addition, multiple vendors can use this protocol to share information for monitoring and supervisory control between systems and devices in a multi-vendor interconnected system. The BACnet protocol identifi es standard objects (data points) called BACnet objects. Each object has a defi ned list of properties that provide information about that object. BACnet also defi nes a number of standard application services that are used to access data and manipulate these objects and provides a client/server communication between devices.

BACnet Testing Laboratory (BTL)

Certifi cation

All Tracer™ UC800 controllers are designed to support BACnet communication protocol. In addition, some particular revisions of the UC800 fi rmware have been tested and have achieved BTL certifi cation by an offi cial BACnet testing laboratory. For more details, refer to the BTL website at: www.bacnetassociation.org.

Modbus RTU Protocol

Modicon Communication Bus (Modbus) is an application layer-messaging protocol that, like BACnet, provides client/server communication between devices over a variety of networks. During communications on a Modbus RTU network, the protocol determines how each controller will know its device address, recognize a message addressed to its device, determine what action to take, and extract any data or other information contained in the message. Controllers communicate using a master/slave technique, whereby, only one device (master) can initiate transactions (queries). Other devices (slaves) respond by supplying the requested data to the master or by taking the action requested in the query.

The master can address individual slaves or it can initiate a broadcast message to all slaves. In turn, the slaves respond to queries that are addressed to them individually or broadcasted. The Modbus RTU protocol establishes the format for the master’s query by placing into it the device address, a function code defi ning the requested action, any data to be sent, and an error-checking fi eld.

Overview

BAS-SVP022A-GB6

This section provides information about the Tracer ™ UC800 controller rotary switches and LED displays.

Communication Interfaces

The UC800 supports the communication interfaces listed below. There is one set of terminations (link) for BACnet and Modbus. LonTalk™ and Comm 4 communication interfaces connect to the IPC3 bus which is the MBUS connection.

• BACnet MS / TP

• Modbus Slave

• LonTalk using LCI-C (fromtheIPC3bus) Note: Refer to “Additional Resources”.

• Comm4 using TCI (from the IPC3 bus)

Rotary Switches

There are three rotary switches on the front of the UC800. See Figure 1. Use these switches to defi ne a three-digit address when the UC800 is installed in a BACnet or Modbus RTU system (for example, 107, 127, and so on). Note: Valid MAC addresses are 001 to 127 for BACnet and 001 to 247 for Modbus RTU. For additional information about setting higher addresses, refer to “Device ID”.

LED Description and Operation

There are 10 LEDs on the front of the UC800. Figure 1 shows the locations of each LED and a description of its behavior in specifi c instances.

Figure 1 - LED locations

SERVICE TOOL

SERVICE

IMCMBUSLINK

RX

TX

ACT

LINK

UC800

MBUSLINK

+24VDC

IMC

1

IMC

USB

ADDRESS0 1

23

456

78

9

x1

0 1

23

456

78

9

x10

0 1

23

456

78

9

x100

SERVICE

IMCMBUSLINK

RX

TX

ACT

LINK

Marquee LED

• Shows solid green when the UC800 is powered and operating normally.

• Shows solid red when the UC800 is powered, but represents low power or a malfunction.

• Blinks red when an alarm exists.

LINK, MBUS, IMC

• The TX LED blinks green at the data transfer rate when the UC800 transfers data to other devices on the link.

• The RX LED blinks yellow at the data transfer rate when the UC800 receives data from other devices on the link.

Ethernet Link

• The LINK LED shows solid green if the Ethernet link is connected and communicating.

• The ACT LED blinks yellow at the data transfer rate when data fl ow is active on the link.

SERVICE

• Shows solid green when pressed.(For more details, refer to the document, Installation, Operation, and Maintenance Guide for Chillers (RTHD Evo – RTAF) with Tracer UC800 Control listed in the section, “Additional Resources”.

Tracer UC800 Controller Rotary Switches

BAS-SVP022A-GB 7

The following table provides a quick reference to equivalent data point objects names for RTWD and RTAF chillers when using either BACnet or Modbus RTU communications. This table is sorted alphabetically by data point names.

Note: The information contained in the following table is for versions 2.06 and higher. For version 1.11, refer to BACnet and Modbus RTU Communications Interfaces for Trane Chillers with Tracer UC800 Control Integration Guide.

Data Point Objet Name BACnet Objet

Modbus RTU Register RTHD RTAF

Active Chilled Water Setpoint AI 1 30003 X XFront Panel Chilled Water Setpoint AI 2 30004 X XEvaporator Entering Water Temperature AI 3 30005 X XEvaporator Leaving Water Temperature AI 4 30006 X XActive Current Limit Setpoint AI 5 30007 X XFront Panel Current Limit Setpoint AI 6 30008 X XUnit Power Consumption AI 7 30009 X XOutdoor Air Temperature AI 8 30010 X XExternal Chilled Water Setpoint AI 9 30011 X XExternal Current Limit Setpoint AI 10 30012 X XEvaporator Refrigerant Pressure Ckt1 AI 11 30013 X XCondenser Refrigerant Pressure Ckt1 AI 12 30014 X XDifferential Refrigerant Pressure Ckt1 AI 13 30015 X XEvaporator Saturated Rfgt Temp Ckt1 AI 14 30016 X XCondenser Saturated Rfgt Temp Ckt1 AI 15 30017 X XEvaporator Refrigerant Pressure Ckt2 AI 16 30018 XCondenser Refrigerant Pressure Ckt2 AI 17 30019 XDifferential Refrigerant Pressure Ckt2 AI 18 30020 XEvaporator Saturated Rfgt Temp Ckt2 AI 19 30021 XCondenser Saturated Rfgt Temp Ckt2 AI 20 30022 XDischarge Temperature Cprsr1A AI 21 30023 X XOil Pressure Cprsr1A AI 22 30024 X XOil Temperature Cprsr1A AI 23 30025 X XDischarge Temperature Cprsr2A AI 24 30026 XOil Pressure Cprsr2A AI 25 30027 XOil Temperature Cprsr2A AI 26 30028 XAir Flow Ckt1 AI 30 30032Air Flow Ckt2 AI 31 30033Starts Cprsr1A AI 35 30035/36 X XRun Time Cprsr1A AI 36 30037/38 X XMotor Voltage Phase AB Cprsr1A AI 37 30039 X XMotor Voltage Phase BC Cprsr1A AI 38 30040 X XMotor Voltage Phase CA Cprsr1A AI 39 30041 X XMotor Current A Cprsr1A AI 40 30042 X XMotor Current B Cprsr1A AI 41 30043 X XMotor Current C Cprsr1A AI 42 30044 X XMotor % RLA A Cprsr1A AI 43 30045 X XMotor % RLA B Cprsr1A AI 44 30046 X X

Equivalent Data Points Reference List for RTHD Evo

and RTAF Chillers: BACnet, Modbus RTU

BAS-SVP022A-GB8



Motor % RLA C Cprsr1A AI 45 30047 X XAverage Motor Current % RLA AFD 1A AI 46 30048 XStarts Cprsr2A AI 51 30051/52 XRun Time Cprsr2A AI 52 30053/54 XMotor Voltage Phase AB Cprsr2A AI 53 30055 XMotor Voltage Phase BC Cprsr2A AI 54 30056 XMotor Voltage Phase CA Cprsr2A AI 55 30057 XMotor Current A Cprsr2A AI 56 30058 XMotor Current B Cprsr2A AI 57 30059 XMotor Current C Cprsr2A AI 58 30060 XMotor % RLA A Cprsr2A AI 59 30061 XMotor % RLA B Cprsr2A AI 60 30062 XMotor % RLA C Cprsr2A AI 61 30063 XAverage Motor Current % RLA AFD 2A AI 62 30064 XRun Enable BI 1 30094 X XLocal Setpoint Control BI 2 30095 X XLimit Mode Relay Status BI 3 30096 X XChiller Running State BI 4 30097 X XMaximum Capacity Relay BI 5 30098 X XAlarm Present BI 10 30099 X XChiller Running Status MI 1 30100 X XOperating Mode MI 2 30101 X XFront Panel Chiller Mode MI 3 30102 X XFront Panel Auto/Stop MI 8 30103 X XActive Chilled Water Setpoint Source MI 5 30104 X XSetpoint Source MI 4 30105 X XActive Current Limit Setpoint Source MI 6 30106 X XManual Override Exists BI 8 30107 X XRunning Status Cprsr1A BI 11 30108 X XRunning Status Cprsr2A BI 12 30109 XExternal Auto Stop MI 7 30110 X XEmergency Stop BI 9 30111 X XEvaporator Water Pump Command BI 6 30112 X XEvaporator Water Flow Status BI 7 30113 X XBAS Chiller Auto Stop Command MV 1 40001 X XBAS Chiller Mode Command MV 2 40002 X XChilled Water Setpoint AV 1 40003 X XCurrent Limit Setpoint AV 3 40004 X XBAS Noise Reduction Command BV 3 40005 X

Last Diagnostic Code Not Available 30114 X X

Reset Diagnostic BV 2 40008 X X


BACnet, Modbus RTU

BAS-SVP022A-GB 9



AFD Fault 1A BI 500 X XAFD Fault 2A BI 501 XAt Speed Input Opened BI 502 X XAt Speed Input Opened BI 503 X XAt Speed Input Shorted BI 504 X XAt Speed Input Shorted BI 505 X XBAS Communication Lost BI 506 X XBAS Failed to Establish Communication BI 507 X XChiller Service Recommended BI 508 X XComm Loss: AFD Fault Input 1A BI 509 X XComm Loss: AFD Fault Input 2A BI 510 XComm Loss: AFD Run Command BI 511 X XComm Loss: AFD Run Command BI 512 X XComm Loss: Auxiliary Setpoint Command BI 513 X X

Comm Loss: Oil Temperature BI 514 X XComm Loss: Oil Temperature BI 515 XComm Loss: Energy Meter Pulse Input BI 516 XComm Loss: Evap Iso Valve Close Switch BI 517 X

Comm Loss: Evap Iso Valve Close Switch BI 518 X

Comm Loss: Evap Iso Valve Open Switch BI 519 X

Comm Loss: Evap Iso Valve Open Switch BI 520 X

Comm Loss: Evap Isolation Valve Relay BI 521 XComm Loss: Evap Isolation Valve Relay BI 522 XComm Loss: Evaporator Pump 2 Fault Input BI 523 X X

Comm Loss: Evaporator Pump 1 Fault Input BI 524 X X

Comm Loss: Fan Relay 1 - Circuit 1 BI 525 XComm Loss: Fan Relay 1 - Circuit 2 BI 526 XComm Loss: Fan Relay 2 - Circuit 1 BI 527 XComm Loss: Fan Relay 2 - Circuit 2 BI 528 XComm Loss: Fan Relay 3 - Circuit 1 BI 529 XComm Loss: Fan Relay 3 - Circuit 2 BI 530 XComm Loss: Fan Relay 4 - Circuit 1 BI 531 XComm Loss: Fan Relay 4 - Circuit 2 BI 532 XComm Loss: High Pressure Cutout Switch BI 533 X X

Comm Loss: High Pressure Cutout Switch BI 534 X


BACnet, Modbus RTU

BAS-SVP022A-GB10



Comm Loss: Local BAS Interface BI 535 X XComm Loss: Motor 1A RLA Input BI 536 X XComm Loss: Motor 2A RLA Input BI 537 XComm Loss: Motor Winding Tstat Cprsr2A BI 538 X

Comm Loss: Motor Winding Tstat Cprsr1A BI 539 X X

Comm Loss: Programmable Relay Board 2 BI 540 X XComm Loss: Slide Valve Load BI 541 X XComm Loss: Slide Valve Load BI 542 XComm Loss: Slide Valve Unload BI 543 X XComm Loss: Slide Valve Unload BI 544 XComm Loss: Speed Command 1A BI 545 X XComm Loss: Speed Command 2A BI 546 XComm Loss: Starter BI 547 X XComm Loss: Step Load BI 548 XComm Loss: Step Load BI 549 XComm Loss: Sub-Cooling Liq Press, Ckt 2 BI 550 X XComm Loss: Sub-Cooling Liq Press, Ckt 1 BI 551 X XCompressor Did Not Accel: Transition BI 552 X XCompressor Did Not Accel: Transition BI 553 X XCompressor Did Not Accelerate: Shutdown BI 554 X X

Compressor Did Not Accelerate: Shutdown BI 555 X

Oil Temperature Sensor BI 556 X XOil Temperature Sensor BI 557 XComm Loss: Starter BI 558 X XComm Loss: Fan Control Relays BI 559 XComm Loss: Fan Control Relays BI 560 XEvaporator Pump 1 Fault BI 561 XEvap Pump 1 Starts Run time Written BI 562 XEvaporator Pump 2 Fault BI 563 XComm Loss: Evaporator Water Pump 2 Relay BI 564 X

Evap Pump 2 Starts Run time Written BI 565 XComm Loss: Evap Pump Inv1 Fault Input BI 566 X

Comm Loss: Evap Pump Inv1 Freq Feedback BI 567 X

Comm Loss: Evap Pump Inv1 Run Command BI 568 X

Evap Water Pump 1 Svc Recommended BI 569 XEvap Water Pump 2 Svc Recommended BI 570 X


BACnet, Modbus RTU

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Evap Iso Valve Closed Switch Failure BI 571 XEvap Iso Valve Closed Switch Failure BI 572 XEvap Isolation Valve Failed To Close BI 573 XEvap Isolation Valve Failed To Close BI 574 XEvap Isolation Valve Failed To Open BI 575 XEvap Isolation Valve Failed To Open BI 576 XEvap Iso Valve Illegal Switch State BI 577 XEvap Iso Valve Illegal Switch State BI 578 XEvap Iso Valve Open Switch Failure BI 579 XEvap Iso Valve Open Switch Failure BI 580 XEvaporator Water Flow Lost - Pump1 BI 581 XEvaporator Water Flow Lost - Pump2 BI 582 XEvaporator Water Flow Overdue - Pump1 BI 583 X

High Motor Winding Temperature BI 584 XHigh Motor Winding Temperature BI 585 High Oil Temperature BI 586 X XHigh Oil Temperature BI 587 XLCI-C Software Mismatch: Use BAS Tool BI 588 Mfr Maintenance Recommended Cprsr1A BI 589 X XMfr Maintenance Recommended Cprsr1B BI 590 XMfr Maintenance Recommended Cprsr2A BI 591 XMfr Maintenance Recommended Cprsr2B BI 592 XMomentary Power Loss BI 593 X XMomentary Power Loss BI 594 XMotor 1A RLA Input BI 595 X XMotor 2A RLA Input BI 596 XMotor Current Overload BI 597 X XMotor Current Overload BI 598 XPhase Loss BI 599 X XPhase Loss BI 600 XPhase Reversal BI 601 X XPhase Reversal BI 602 XPower Loss BI 603 XPower Loss BI 604 XSevere Current Imbalance BI 605 X XSevere Current Imbalance BI 606 XStarter Comm Loss: Main Processor BI 607 X XStarter Comm Loss: Main Processor BI 608 XStarter Contactor Interrupt Failure CKT1 BI 609 X XStarter Contactor Interrupt Failure CKT2 BI 610 XStarter Did Not Fully Accelerate BI 611 X X


BACnet, Modbus RTU

BAS-SVP022A-GB12



Starter Did Not Fully Accelerate BI 612 XStarter Did Not Transition BI 613 X XStarter Did Not Transition BI 614 XStarter Dry Run Test BI 615 X XStarter Dry Run Test BI 616 XStarter Fault Type I BI 617 X XStarter Fault Type I BI 618 XStarter Fault Type II BI 619 X XStarter Fault Type II BI 620 XStarter Fault Type III BI 621 X XStarter Fault Type III BI 622 XStarter Module Memory Error Type 1 BI 623 X XStarter Module Memory Error Type 2 BI 624 XStarter Module Memory Error Type 2 BI 625 XSub-Cooling Pressure Sensor, Circuit 2 BI 626 XLiquid Line Pressure Sensor - Ckt1 BI 627 X XTransition Complete Input Opened BI 628 X XTransition Complete Input Opened BI 629 XTransition Complete Input Shorted BI 630 X XTransition Complete Input Shorted BI 631 X


BACnet, Modbus RTU

BAS-SVP022A-GB 13

The Tracer UC800 controller is an equipment unit controller that provides the equipment system sequences and performs closed-loop control. In addition, the UC800 integrates with other BACnet systems and devices using BACnet MS/TP. This section includes information about:

• BACnet protocol implementation conformance statement (PICS)

• Object types: descriptions and confi guration

• Baud rate, Device ID, and character set

BACnet Protocol Implementation

Conformance Statement (PICS)

Standardized Device Profi leBACnet application specifi c controller (B-ASC)

Interoperability Building Blocks

Data Sharing• Data Sharing-Read Property-B(DS-RP-B)

• Data Sharing-Read Property Multiple-B(DS-RPM-B)

• DataSharing-WriteProperty-B(DS-WP-B)

• Data Sharing-Write Property Multiple-B(DS-WPM-B)

Alarm and Event Management

• Alarm and Event-Notifi cation Internal-B(AE-N-I-B)

• Alarm and Event-Information-B(AE-INFO-B)

Device Management

• Device Management-Dynamic Device Binding-A(DM-DDB-A)

• Device Management-Dynamic Device Binding-B(DM-DDB-B)

• Device Management-Dynamic Object Binding-B(DM-DOB-B)

• Device Management-Device Communication Control-B(DM-DCC-B)

• Device Management-Time Synchronization-B(DM-TS-B)

• Device Management-UTC Time Synchronization-B(DM-UTC-B)

BACnet Data Points and Confi guration Property Defi nitions

BAS-SVP022A-GB14

Binary Outputs

Object_Identifi cation Object_Name Type Inst. Relinquish Default

Inactive Text

Active Text

0x0100000FFFFFFFFFA (Binary Output, -6)

Chiller Auto Stop Command BO 1 True Stop Auto

0x0100000FFFFFFFFFB (Binary Output, -5)

Remote Diagnostic Reset Command BO 2 False No Reset

RequestReset

Request0x0100000FFFFFFFFFC (Binary Output, -4)

Base Loading Auto/On Request BO 3 False Auto On

Binary Inputs

Object_Identifi cation Object_Name Type Inst.0x00C00001 (Binary Input, 1) Run Enabled BI 10x00C00002 (Binary Input, 2) Local Setpoint Control BI 20x00C00003 (Binary Input, 3) Capacity Limited BI 30x00C00004 (Binary Input, 4) Chiller Running State BI 40x00C00005 (Binary Input, 5) Condenser Water Flow Status BI 50x00C00006 (Binary Input, 6) Head Relief Request BI 70x00C00007 (Binary Input, 7) Base Loading Active BI 80x00C00008 (Binary Input, 8) Compressor 1A Running BI 90x00C00009 (Binary Input, 9) Evaporator Water Pump Request BI 170x00C0000A (Binary Input, 10) Condenser Water Pump Request BI 190x00C0000B (Binary Input, 11) Evaporator Water Flow Status BI 220x00C0000C (Binary Input, 12) Alarm Present BI 230x00C0000D (Binary Input, 13) Shutdown Alarm Present BI 240x00C0000E (Binary Input, 14) Last Diagnostic BI 25

Analog Outputs

Object_Identifi cation Object_Name Type Inst. Relinquish Default Units Min

ValueMax

Value0x040000014(Analog Output, 20) Chilled Water Setpoint AO 1 44F Degrees

celcius 0F 75F

0x040000015(Analog Output, 21) Current Limit Setpoint AO 2 100% Percent 0% 120%

0x040000016(Analog Output, 22) Hot Water Setpoint AO 4 120F Degrees

Celcius 80F 140F

0x040000017(Analog Output, 23) Base Loading Setpoint AO 5 50% Percent 0% 100%


BAS-SVP022A-GB 15

Analog Inputs

Object_Identifi cation Object_Name Type Inst. Units

0x0000001E (Analog Input, 30) Active Cool/Heat Setpoint Temperature AI 1 Degrees_Celcius

0x0000001F (Analog Input, 31) Active Current Limit Setpoint AI 2 Percent0x00000020 (Analog Input, 32) Active Base Loading Setpoint AI 4 Percent0x00000021 (Analog Input, 33) Actual Running Capacity AI 5 Percent0x00000022 (Analog Input, 34) Evaporator Refrigerant Pressure - Ckt 1 AI 6 kPa0x00000023 (Analog Input, 35) Evaporator Refrigerant Pressure - Ckt 2 AI 9 kPa

0x00000024 (Analog Input, 36) Evaporator Saturated Refrigerant Temperature - Ckt 1 AI 12 Degrees_

Celcius0x00000025 (Analog Input, 37) Condenser Refrigerant Pressure - Ckt 1 AI 16 kPa0x00000026 (Analog Input, 38) Condenser Refrigerant Pressure - Ckt 2 AI 18 kPa

0x00000027 (Analog Input, 39) Condenser Saturated Refrigerant Temperature - Ckt 1 AI 20 Degrees_

Celcius

0x00000028 (Analog Input, 40) Condenser Saturated Refrigerant Temperature - Ckt 2 AI 22 Degrees_

Celcius0x00000029 (Analog Input, 41) Local Atmospheric Pressure AI 25 kPa0x0000002A (Analog Input, 42) Starts - Compressor 1A AI 26 None0x0000002B (Analog Input, 43) Run Time - Compressor 1A AI 34 Hours

0x0000002C (Analog Input, 44) Evaporator Entering Water Temp AI 44 Degrees_Celcius

0x0000002D (Analog Input, 45) Evaporator Leaving Water Temp AI 45 Degrees_Celcius

0x0000002E (Analog Input, 46) Condenser Entering Water Temp AI 46 Degrees_Celcius

0x0000002F (Analog Input, 47) Condenser Leaving Water Temp AI 47 Degrees Celcius

0x00000030 (Analog Input, 48) High Side Oil Pressure - Compressor 1A AI 48 kPa

0x00000031 (Analog Input, 49) Refrigerant Disch Temp - Ckt 1 AI 56 Degree Celcius

0x00000032 (Analog Input, 50) Condenser Control Output AI 58 Percent0x00000033 (Analog Input, 51) Phase AB Voltage - Compressor 1A AI 59 Volts0x00000034 (Analog Input, 52) Phase BC Voltage - Compressor 1A AI 60 Volts0x00000035 (Analog Input, 53) Phase CA Voltage - Compressor 1A AI 61 Volts0x00000036 (Analog Input, 54) Line 1 Current (in Amps) - Compressor 1A AI 71 Amps0x00000037 (Analog Input, 55) Line 2 Current (in Amps) - Compressor 1A AI 72 Amps0x00000038 (Analog Input, 56) Line 3 Current (in Amps) - Compressor 1A AI 73 Amps0x00000039 (Analog Input, 57) Line 1 Current (%RLA) - Compressor 1A AI 83 Percent0x0000003A (Analog Input, 58) Line 2 Current (%RLA) - Compressor 1A AI 84 Percent0x0000003B (Analog Input, 59) Line 3 Current (%RLA) - Compressor 1A AI 85 Percent0x0000003C (Analog Input, 60) Number of Circuits AI 95 None0x0000003D (Analog Input, 61) Number of Compressors - Ckt 1 AI 96 None0x0000003E (Analog Input, 62) Number of Compressors - Ckt 2 AI 97 None0x0000003F (Analog Input, 63) Chiller Design Capacity AI 98 kW


BAS-SVP022A-GB16

Multi State Outputs

Object_Identifi cation Object_Name Type Inst. IPC3 StatesNumber

of States

State Text Relinquish Default

0x038000045(Multi-State Output, 69)

Chiller Mode Command MO 1

[3] HVAC_COOL[1] HVAC_HEAT[11] HVAC_ICE[10] HVAC_FREE_COOL

4

[0] 4[1] Cool[2] Heat[3] Ice Making[4] NOT_USED

[1] [Cool]

MultiState Inputs

Object_Identifi er Object_Name Type Inst. Number of States State Text

0x0340004B(Multi_State Input, 75) Running Mode MI 1 5

[0] 5[1] Chiller Off[2] Chiller in Start Mode[3] Chiller in Run Mode[4] Chiller in Pre-Shutdown Mode[5] Chiller in Service Mode

0x0340004C(Multi_State Input, 76) Operating Mode MI 2 4

[0] 4[1] HVAC_COOL[2] HVAC_HEAT[3] HVAC_ICE[4] NOT_USED

0x0340004D(Multi_State Input, 77) MP Communication Status MI 3 4

[0] 4[1] Communication[2] Communication Lost[3] Failed To Establish[4] Waiting To Establish

0x0340004E(Multi_State Input, 78) Refrigerant Type MI 4 12

[0] 12[1] R-11[2] R-12[3] R-22[4] R-123[5] R-134A[6] R-407C[7] R-410A[8] R-113[9] R-114[10] R-500[11] R-502[12] R-404A

0x0340004F(Multi_State Input, 79) Model Information MI 5 16

[0] 16[1] RTA[2] CVH[3] CVG[4] CVR[5] CDH[6] RTH[7] CGW[8] CGA[9] CCA[10] RTW[11] RTX[12] RTU[13] CCU[14] CXA[15] CGC[16] RAU


BAS-SVP022A-GB 17

Object_Identifi er Object_Name Type Inst. Number of States State Text

0x03400050(Multi_State Input, 80) Cooling Type MI 6 2

[0] 2[1] Water Cooled[2] Air Cooled

0x03400051(Multi_State Input, 81) Manufacturing Location MI 7 18

[0] 18[1] Field Applied[2] La Crosse[3] Pueblo[4] Charmes[5] Rushville[6] Macon[7] Waco[8] Lexington[9] Forsyth[10] Clarksville[11] Ft. Smith[12] Penang[13] Colchester[14] Curitiba[15] Taicang[16] Taiwan[17] Epinal[18] Golbey


BAS-SVP022A-GB18

The Tracer UC800 controller is an equipment unit controller which provides the equipment system sequences and performs closed-loop control. In addition, the UC800 integrates with Modbus systems and devices using Modbus RTU protocol. This section includes information about baud rate, parity, and supported character sets

Protocol: Baud Rate, Parity, and Supported Character Sets

Baud Rate: 300, 1200, 2400, 4800, 9600, 19200 (default), 38400, 57600 or 115200

Parity: Even (default) or None

Stop Bits: One (default) or two

Modbus Data Points Descriptions and Confi gurations

Binary Outputs

Register Object Name Register Register Type Register Value

BAS Chiller Auto stop Command 40001 Binary 0=OFF; 1=ON Holding Register-Read/WriteBAS Base Loading Command 40007 Binary 0=OFF; 1=ON Holding Register-Read/WriteBAS Diagnostic Reset 40008 Binary 0=OFF; 1=ON Holding Register-Read/Write

Binary Inputs


Chiller Running 30003 Binary 0=OFF; 1=ON Input Register-Read onlyEvaporator Water Pump Command 30012 Binary 0=OFF; 1=ON Input Register-Read only

Evaporator Water Flow Status 30013 Binary 0=No Flow; 1=Flow Input Register-Read only

Condenser Water Pump Command 30014 Binary 0=OFF; 1=ON Input Register-Read only

Condenser Water Flow Status 30015 Binary 0=No Flow; 1=Flow Input Register-Read only

Alarm Present 30019 Binary 0=No ; 1=Yes Input Register-Read onlyShutdown Alarm Present 30020 Binary 0=No ; 1=Yes Input Register-Read only

Run Enable 30021 Binary 0=Stop; 1=Auto Input Register-Read only

Local Setpoint Control 30022 Binary 0=No; 1=Yes Input Register-Read only

Limit Mode Relay Status 30023 Binary 0=Inactive; 1=Active Input Register-Read only

Head Relief Request Relay 30024 Binary 0=OFF; 1=ON Input Register-Read only

Active Base Loading Command 30026 Binary 0=Inactive; 1=Active Input Register-Read only

Compressor Running status 30027 Binary 0=OFF; 1=Running Input Register-Read only

Modbus RTU Data Points and Confi guration

Property Defi nitions

BAS-SVP022A-GB 19

Analogic Outputs


BAS Chilled Water Setpoint 40003 Temperature 0~75F Holding Register-Read/WriteBAS Current Limit Setpoint 40004 Percent 0~100% Holding Register-Read/WriteBAS Hot Water Setpoint 40005 Temperature 80~140F Holding Register-Read/WriteBAS Base Loading Setpoint 40006 Percent 0~100% Holding Register-Read/Write

Analogic Inputs


Active Current Limit Setpoint 30004 Percent Input Register-Read onlyActive Base Loading Setpoint 30005 Percent Input Register-Read onlyActual Running Capacity 30006 Percent Input Register-Read onlyActive Cool/Heat Setpoint Temperature 30007 Temperature Input Register-Read only

Evaporator Entering Water Temperature 30008 Temperature Input Register-Read only

Evaporator Leaving Water Temperature 30009 Temperature Input Register-Read only

Condenser Entering Water Temperature 30010 Temperature Input Register-Read only

Condenser Leaving Water Temperature 30011 Temperature Input Register-Read only

Head Pressure Control Command 30025 Voltage Input Register-Read only

Local Atmospheric Pressure 30028 Pressure Input Register-Read onlyEvaporator Refrigerant Pressure 30029 Pressure Input Register-Read onlyCondenser Refrigerant Pressure 30030 Pressure Input Register-Read onlyEvaporator Saturated Rfgt Temp 30031 Temperature Input Register-Read onlyCondenser Saturated Rfgt Temp 30032 Temperature Input Register-Read onlyCompressor Oil Pressure 30035 Pressure Input Register-Read onlyDischarge Temperature 30036 Temperature Input Register-Read onlyStarter Input Voltage AB 30037 Voltage Input Register-Read onlyStarter Input Voltage BC 30038 Voltage Input Register-Read onlyStarter Input Voltage CA 30039 Voltage Input Register-Read onlyStarter Motor Current L1 30040 Current Input Register-Read onlyStarter Motor Current L2 30041 Current Input Register-Read onlyStarter Motor Current L3 30042 Current Input Register-Read onlyStarter Motor Current L1 % RLA 30043 Percent Input Register-Read onlyStarter Motor Current L2 % RLA 30044 Percent Input Register-Read onlyStarter Motor Current L3 % RLA 30045 Percent Input Register-Read onlyFrequency Command 30046 Frequency Input Register-Read onlyAFD Output Power 30047 Power Input Register-Read only

Modbus RTU Data Points and Confi guration Property Defi nitions

BAS-SVP022A-GB20

Multistate Inputs


Software Type 30001 N/A Input Register-Read onlySoftware Revision 30002 N/A Input Register-Read only

Chiller Running Status 30016 Enumeration

[1] Not Running[2] Starting[3] Running[4] Stopping[5] Chiller in Service Mode

Input Register-Read only

Chiller Mode Command 30017 Enumeration

[1] Cool[2] Heat[3] Ice[4] NOT_USED


BAS Communication Status 30018 Enumeration

[1] Established[2] Lost[3] Never Established[4] Starting


Compressor Starts 30033 Count Input Register-Read onlyCompressor Running Time 30034 Time Interval Input Register-Read onlyNumber of Circuits 30048 Number 1 Input Register-Read onlyNumber of Compressors - Ckt 1 30049 Number 1 Input Register-Read onlyNumber of Compressors - Ckt 2 30050 Number 0 Input Register-Read onlyChiller Design Capacity 30051 Number Input Register-Read onlyRefrigerant Type 30052 Enumeration [0] R-134A Input Register-Read onlyModel Information 30053 Enumeration [6] RTHD / RTAF Input Register-Read only

Cooling Type 30054 Enumeration [1] Water Cooled / Air Cooled Input Register-Read only

Manufacturing Location 30055 Enumeration

[3] Pueblo [15] Taicang[17] Epinal[18] Golbey


Last Diagnostic 30056 Enumeration Input Register-Read only

Multistate Outputs


BAS Chiller Mode Command 40002 Enumeration 1= Cool; 2=Heat; 3=Ice

Holding Register-Read/Write

Modbus RTU Data Points and Confi guration Property Defi nitions

BAS-SVP022A-GB 21

Use the following documents and links as additional resources:

• RTHD Evo, Installation, Operation, and Maintenance Manual (IOM: RLC – SVX018A)

• RTAF, Installation, Operation, and Maintenance Manual (IOM: RLC-SVX019A)

• LonTalk™ Communication Interface for Trane Chillers with Tracer AdpatiView Control Hardware and Software Installation Guide (ACC-SVN100A-EN)

• Tracer TU Service Tool (CTV-SVD03A-EN)

• WWW.bacnet.org

• WWW.bacnetassociation.org

• WWW.modbus.org

• WWW.ashrae.org

Note: For further assistance, contact your local Trane Sales Offi ce.

Additional Resources

BAS-SVP022A-GB22

A

ASHRAESee American Society of Heating, Refrigeration, and Air-conditioning Engineers

American Society of Heating, Refrigeration, and Air-conditioning EngineersAn international organization of 50,000 persons with chapters throughout the world. The Society is organized for the sole purpose of advancing the arts and sciences of heating, ventilation, air conditioning and refrigeration. It benefi ts the public with its research, standards writing, continuing education, and publications.

B

BACnet™See Building Automation Control network

BACnet interoperability building blocksA block of BACnet application services that tells vendors what BACnet services must be implemented to provide specifi c device functionality. The BIBBs are grouped together into BACnet device profi les.

BACnet objectAn abstract representation of the physical point or points where data is input from or output to an I/O device. Each object may have several BACnet properties that describe the status of that object.

Baud rateThe number of signaling elements that occur each second during electronic data transmission. At slow speeds, baud indicates the number of bits per second that are transmitted. For example, 500 baud means that 500 bits are transmitted each second (abbreviated 500bps). At higher speeds, multiple bits may be encoded with each electrical change. For example, 4800 baud may allow 9600 bits to be sent each second. Data transmission rates at high speeds are generally expressed in bits per second (bps) rather than baud. For example, a 9600 bps mode may operate at only 2400 baud.

BIBBSee BACnet interoperability building blocks

Building Automation Control network (BACnet and ANSI/ASHRAE Standard 135-2004)An interoperable protocol developed specifi cally for the building controls industry. The American National Standards Institute named it as a standard and Trane advocates BACnet protocol for use in system-level control devices.

C

Confi guration (Tracer™UC800 controller)Refers to the use of the Tracer TU service tool to select the chiller type, tonnage, and other options, of a Tracer UC800 controller.

D

deviceA device is a standard BACnet object as defi ned by ASHRAE Standard 135-2004. The Tracer UC800 contains the BACnet object.

Device IDThe Device ID issued to uniquely identify each BACnet Device and it can be in the range of 0 to 4194302. There cannot be more than one device using the same Device ID. Each of the sample applications operate as a device and requires its own device id which defaults to zero.

H

Holding register (read/write)A function code used to read the content from contiguous block of holding registers in a remote device used with the Modbus protocol.

Glossary

BAS-SVP022A-GB 23

I

Input register (read-only)A function code used to read from 1 to 125 contiguous input registers in a remote device used with the Modbus protocol.

InteroperabilityThe ability to integrate equipment from different vendors into a comprehensive automation and control system. In addition, digital communications between products designed independently , but designed to the same communication standard.

L

LLIDLow level intelligent device.

M

ModbusA communications standard developed by Modicon for industrial control systems. Modbus variations include Modbus RTU , Intel Modbus RTU, Modbus Plus, and Modbus TCP/IP.

P

protocolA set of rules (language) that governs the exchange of data over a digital communications system.

R

RLARated load amps.

T

Tracer UC800 controllerName of a family of Trane chiller controllers.

Glossary

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy effi cient environments, Trane offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services and parts. For more information visit www.Trane.com

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